<template>
	<div class="zh-batch-import">
		<nav-header>
			<template slot="menuBefore">
				<li @click="back(-1)" style="cursor: pointer">班级成员管理</li>
				<li class="gap">&gt;</li>
			</template>
			<li>批量导入</li>
		</nav-header>
		<div class="zh-import-comter">
			
				<el-button plain @click="downloadDemo">下载模板</el-button>
			    <uploader :options="uploadOptions" :autoStart="false" ref="uploader" :file-status-text="statusText" @files-submitted="fileSubmit" @file-removed="fileRemoved" @file-success="fileSuccess" @file-error="fileFail"  class="uploader-example">
				    <uploader-unsupport></uploader-unsupport>
				    <uploader-btn :directory="false" :attrs="attrs" v-if="selectFileShow" :single="true">选择文件</uploader-btn>
				    <uploader-list  v-if="!selectFileShow"></uploader-list>
				</uploader>
				<el-button type="primary" v-if="!selectFileShow" @click="fileUpload" style="margin-top: 10px;">确定导入</el-button>
		</div>
		<div class="zh-import-text">
			<p>注意事项: </p>
			<p>1、格式支持：excel 2003/2007 及以上版本的<span> xls/xlsx </span>格式。</p>
			<p>2、Excel表数据从的第二行开始有效。其中<span>登录账号、用户名、角色</span>为必填项，不能错误，否则会导致失败。</p>
			<p>3、批量导入<span>用户密码默认666666</span>,导入后用户可以登录进入个个人中心修改 </p>
			<p>4、班级归属请严格按照年级/班级<span>（例：一年级/101班）</span></p>
		</div>
		<div class="zh-import-table">
			<p>例：</p>
			<div class="zh-table">
				<div class="zh-table-contents">
					<el-table
					    :data="importData"
					    border
					    style="width: 100%">
					    <el-table-column
					      prop="1"
					      label="登录帐号"
					      align="center"
					      show-overflow-tooltip
					      >
					    </el-table-column>
					    <el-table-column
					      prop="2"
					      label="用户名"
					      align="center"
					      show-overflow-tooltip
					      >
					    </el-table-column>
					    <el-table-column
					      prop="3"
					      label="身份"
					      align="center"
					      show-overflow-tooltip
					      >
					    </el-table-column>
					    <el-table-column
					      prop="4"
					      label="性别"
					      align="center"
					      show-overflow-tooltip
					      >
					    </el-table-column>
					    <!-- <el-table-column
					      prop="5"
					      label="电子邮箱"
					      align="center"
					      show-overflow-tooltip
					      >
					    </el-table-column> -->
					</el-table>
				</div>
			</div>
		</div>
	</div>
</template>
<script>
    import {downloadBatchDemo, uploaderFileFail, longTimeMessage} from './../../../tools/tool';

	export default {
	    data() {
		    return {
		    	messageObj:{},
		    	statusText: {
			      	success: '上传成功',  
			      	error: '上传出错',  
			     	uploading: '正在上传...',  
			      	paused: '暂停',  
			      	waiting: '等待上传'  
				},
				selectFileOrNot:false,  //是否选中文件
			    uploadOrNot:false, 		//是否已经上传
			    uploadInfo:{
					file_name:'',
					file_path:'',
					file_size:0
				},
				attrs: {
			      	accept: ['application/vnd.ms-excel','application/vnd.openxmlformats-officedocument.spreadsheetml.sheet']
			    },
		    	uploadOptions: {
			          target: this.BASE_URL+'/api/user/vue_userdemo_upload',
			          testChunks: false,
			          headers:{Authorization : `Bearer `+this.$g.access_token},
			    },
		        fileList: [],
	      		selectFileShow:true,//是否显示选择文件按钮
				uploadRetryTimes:100,//文件最大重传次数
				importData: [{
					1: "3111002763",
					2: "张三",
					3: "学生",
					4: "男",
					5: "b@c.com",
				},{
					1: "3111002763",
					2: "张三",
					3: "学生",
					4: "男",
					5: "b@c.com",
				},{
					1: "3111002763",
					2: "张三",
					3: "学生",
					4: "男",
					5: "b@c.com",
                }],
                excelUploader: null, // 上传组件引用
	      	}
        },
        mounted () {  
            this.$nextTick(() => {  
                this.excelUploader = this.$refs.uploader.uploader;
            })  
		},
	    methods: {
            /**
             * 下载导出模板
             */
	    	downloadDemo(){
                let url = this.BASE_URL+'/index/resource/user_class_import_demo';
                downloadBatchDemo(url);
	    	},
			submitForm(formName) {
				this.$refs[formName].validate((valid) => {
					if (valid) {
						if( this.selectFileOrNot ){
							this.fileUpload();
						}else{
							this.resourceSave();
						}
					} else {
						return false;
					}
				});
			},
	        resourceSave(){
				let resourceParam = {};
				if( this.uploadOrNot ) {
					resourceParam.path = this.uploadInfo.file_path;
				}
				resourceParam.class_id = this.$route.params.id;
            	let success = ( data=>{
            		this.$message.success(data.msg);
                    
                    setTimeout(() => {
                        this.$router.push('/user/class/class-management/'+this.$route.params.id);
                    }, 1000);
            	})
            	let fail = (res => {
                    longTimeMessage(this, res, 15000);
            	}) 
            	
				this.$ajax.post('api/user/vue_class_user_import',resourceParam,{func:{success:success,fail:fail}})	
            	
			},
			//上传成功的事件  
			fileSuccess (rootFile, file, message, chunk) { 
				this.selectFileShow = true;
                var mess = eval('(' + message + ')');
                mess = handleResponseData( mess );
                
			 	if(parseInt( mess.data.status ) ===1 ){
			  		this.uploadOrNot = true;
			  		this.uploadInfo.file_name = mess.data.file_name;
			  		this.uploadInfo.file_path = mess.data.file_path;
			  		this.uploadInfo.post_fix = mess.data.post_fix;
			  		
			  		this.resourceSave();
			  }
			 this.excelUploader.removeFile(file);
			},
			fileFail(rootFile, file, message, chunk) {
                uploaderFileFail(this, this.excelUploader, file, message);
			},
			//过滤文件格式
			fileSubmit(files, fileList, event){
				for (var i = 0 ; i < fileList.length ; i++ ) {
                    if( this.excelUploader.fileList.length  > 1  ){
                        //删除第一张图片
                        this.excelUploader.removeFile( this.excelUploader.fileList[0] );
                    }
                    this.uploadInfo.file_size = fileList[i].size;
                    this.selectFileOrNot = true;
                    this.selectFileShow = false;
				}
				
			},
			fileRemoved(file){
				this.selectFileOrNot = false;
				this.selectFileShow = true;
			},
			fileUpload(){
				this.excelUploader.upload();
			},
			back(n){
				this.$router.go(n);	
			},
	    },
		destroyed(to, from, next) {
			this.$message.closeAll();
		},
	}
</script>
<style lang="scss">
	.zh-batch-import {
		.zh-import-comter {
			margin-top: 20px;
		}
		.uploader-example {
			margin-top: 20px;
		}
		.zh-import-text {
			font-size: 12px;
		    color: #999;
		    line-height: 30px;
		    margin: 20px;
		    p {
		    	margin: 0;
		    }
		    span {
			    color: red;
			}
		}
		.zh-import-table {
			p {
				font-size: 16px;
				margin-bottom: 20px;
			}
		}
		.uploader-list {
		    .uploader-file-pause {
		      display: none !important;
		    }
		    .uploader-file-status {
		      text-indent: 0;
		    }
 		 }
	}
</style>